Earbud



FIG. 1 is a top perspective view of an earbud showing our new design; a mirror image earbud is evident from the earbud shown;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a left-side view thereof;

FIG. 5 is a right-side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The dashed broken lines depict portions of the earbud that are for illustrative purposes only and form no part of the claimed design. 

CLAIM The ornamental design for an earbud, as shown and described. 